Samuel w



(No Model.)

S. W. WAYSON. HEATING AND VENTILATING APPARATUS. No. 481,085. Pate ted Aug. 16, 1892.

Nrrn STATES ATENT FFICE.

SAMUEL IV. WVAYSON, OF DETROIT, MICHIGAN, ASSIGNOR TO THE DETROIT PLUMBERS SUPPLY COMPANY, OF SAME PLACE.

HEATING AND VENTILATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 481,085, dated August 16, 1892.

Application filed $eptember 10, 1891. Serial No. 405,296. (No model.)

.To all whom it may concern.-

Be it known that I, SAMUEL W. WAYsoN, of Detroit,in the county of Vayne and State of Michigan, have invented a new and useful Improvement in Heating and Ventilating Apparatus, of which the following is a specificaion.

My invention consists in an improvement in heating and ventilating apparatus, intended more especially for large buildings with a number of rooms, hereinafter fully described and claimed.

The drawing is a perspective of the heating-room and flues.

[5 Heating apparatus is usually located in the basement, and H represents a chamber for the reception of the heating apparatus, in which is contained any desired form of heater. (Represented by G.) This may be a hot-air fur- 2o nace or a series of them ora steam-boiler of any known type with or without heating coils or radiators.

The heater preferably stands somewhat raised from the floor, as on a wall L, provided with openings 0 to permit cold air to pass under the heater and rise on all sides thereof into the upper part of the heating-chamber H, or it may, if desired,be set directly on the floor. At one side of the heating-chamber H is a cold room, which is represented by I, having connection with the outer air.

F represents a partition between the cold room I and the heating-chamber H, extending from the top part way down to the floor,

so as to admit cold air from chamber 1 to the lower part of heating-chamber H. The room I is not shown in the drawing, being simply indicated by reference-letter.

A, A, and A represent air-flues which open into the cold room at the upper part thereof,

run across over the top of the heating-chamber H, and then pass upward to the different rooms to which hot air is to be carried. Each of these fines is provided at any suitable point above the heating-chamber H with an openingD and a damper B, hinged at G to the floor J of the air-flue. Each damper B is provided with a chain E, which runs over a little pulley on the roof of the air-flue and then by any desired path through the flue itself,

if desired, to the room with which its air-flue communicates.

The bottom J of the air-Hues A, A, and A is made of some refractory material which will conduct heat, preferably metal, so that it will become warm and slightly warm the air in the horizontal part of the flue over the heating-chamber. Vhen the damper B is in the position shown in the drawing, the cold-air inlet of flue A is closed and the aperture D opened, so that warm air passes from the heating-chamber up through said flue to the room to be warmed. Then it is desired to shut off the heat from said room, the damper B is dropped by slacking 01? chain E from the room above, th us closing aperture D and opening the flue A from its cold-air inlet, thus keeping said flue always open for the passage of air to the room to be warmed. The damper B may be dropped slightly down,so as to leave the air-flue A open both to the chamber II and to a cold-air room I.

The difficulty which arises in the practical operation of devices of this kind as now constructed and applied is that when the air-flue is shut off from the heating-chamber and opened to the cold air the current in the flue ceases, as the cold air is too heavy to rise through the airflue. It has been supposed by some builders that the heat of the air-flue caused by the pas- 8o sage of hot air through it would start an upward current of air when the air-flue is shut off from the heating-chamber and opened to the cold air; but as the flue soon loses its heat this current, while it may flow .for a short time, is feeble, uncertain, and soon ceases, and the result is that the air-flue does not supply fresh air to the room. ith my arrangement, however, when the damper B is dropped over the aperture D, so as to shut off the supply of hot air from the flue A,the bottom J of the flue, being warmed by the hot air in heatingchamber H, remains slightly warm and imparts a slight warmth to the air in the horizontal portion of flue A suliicient to keep up a continuous current of air which is practically 0001 through said air-flue, so that the current of cool air remains continuous so long as there is any heat in heating-chamber H. It will thus be seen that so long as the heating IOO apparatus G is hot there will be a constant I cation with the heating-chamber and with the current of air either Warm or partly Warm co1d-air room or supplyand comprisingaheatand partly cold or cold up through fine A radiating surface which constitutes the top and that there is no danger of a stoppage Wall of the heating-chamber above the heater, I 5 5 of this current When the damper B is closed. and a damper controlling said air-flue, sub- What I claim as my invention, and desire stantially as described.

to secure by Letters Patent, is- SAMUEI W WVAYSON A heating and ventilating apparatus con- J sisting of a heater inclosed in a heating'cham- \Vitnesses 10 her, a cold-air room or supply, an air-flue A, MILLIE L. HUBER,

extending over the heater, having corninuni- XVILLIAM D. RODGER. 

